Evaluation of NaOH pre-treatment on the corrosion behavior and surface characteristics of hydroxyapatite coated NiTi alloy

Name: Evaluation of NaOH pre-treatment on the corrosion behavior and surface characteristics of hydroxyapatite coated NiTi alloy
Author: Şimşek, Görkem Muttalip, Ipekoglu, M., Yapıcı, Güney Güven

İsim	Evaluation of NaOH pre-treatment on the corrosion behavior and surface characteristics of hydroxyapatite coated NiTi alloy
Yazar	Şimşek, Görkem Muttalip, Ipekoglu, M., Yapıcı, Güney Güven
Basım Tarihi:	2020-08-02
Basım Yeri	- Springer Nature
Konu	NiTi, Coating, Hydroxyapatite, Corrosion, Cell viability, Surface wettability
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0947-8396
Kayıt Numarası	d6c3ab6e-56a3-4803-9d7d-77aca109e532
Lokasyon	Mechanical Engineering
Tarih	2020-08-02
Notlar	Ozyegin University
Örnek Metin	Successful short-term implementation of nickel-titanium (NiTi) alloys as implants has been a motivation for the development of long-term applications. However, rendering these as safe implant materials is challenging. The major problem associated with the use of NiTi for in-vivo applications is the potential risk of Ni release from the implant surface due to the corrosive environment of the body. Various methods including surface treatment techniques with acid and alkali solutions and application of biocompatible coatings have been used to overcome these difficulties. In particular, NaOH pre-treatment has been commonly performed for surface activation of the substrate material to enhance the adhesion properties of coatings. The present work investigates the effect of NaOH pre-treatment on the hydroxyapatite (HA) coating and the resulting corrosion behavior of and cell response to HA coated NiTi wires. Microstructural examinations showed that the coating integrity deteriorated with prior NaOH treatment which also increased the corrosion rate as evidenced by potentiodynamic measurements. XPS analysis revealed heightened Ni levels on the sample surfaces and cytotoxicity tests showed decreased cell viability for the samples with pre-treatment. Absence of NaOH pre-treatment led to lower contact angle values pointing to higher biocompatibility.
DOI	10.1007/s00339-020-03847-1
Cilt	126

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Evaluation of NaOH pre-treatment on the corrosion behavior and surface characteristics of hydroxyapatite coated NiTi alloy

Yazar Şimşek, Görkem Muttalip, Ipekoglu, M., Yapıcı, Güney Güven

Basım Tarihi 2020-08-02

Basım Yeri - Springer Nature

Konu NiTi, Coating, Hydroxyapatite, Corrosion, Cell viability, Surface wettability

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0947-8396

Kayıt Numarası d6c3ab6e-56a3-4803-9d7d-77aca109e532

Lokasyon Mechanical Engineering

Tarih 2020-08-02

Notlar Ozyegin University

Örnek Metin Successful short-term implementation of nickel-titanium (NiTi) alloys as implants has been a motivation for the development of long-term applications. However, rendering these as safe implant materials is challenging. The major problem associated with the use of NiTi for in-vivo applications is the potential risk of Ni release from the implant surface due to the corrosive environment of the body. Various methods including surface treatment techniques with acid and alkali solutions and application of biocompatible coatings have been used to overcome these difficulties. In particular, NaOH pre-treatment has been commonly performed for surface activation of the substrate material to enhance the adhesion properties of coatings. The present work investigates the effect of NaOH pre-treatment on the hydroxyapatite (HA) coating and the resulting corrosion behavior of and cell response to HA coated NiTi wires. Microstructural examinations showed that the coating integrity deteriorated with prior NaOH treatment which also increased the corrosion rate as evidenced by potentiodynamic measurements. XPS analysis revealed heightened Ni levels on the sample surfaces and cytotoxicity tests showed decreased cell viability for the samples with pre-treatment. Absence of NaOH pre-treatment led to lower contact angle values pointing to higher biocompatibility.

DOI 10.1007/s00339-020-03847-1

Cilt 126